I have a interarms mark-x in 300 win mag. I have always dreamed of having something in 375 cal. What I was thinking of doing was to take the barrel off the mark-x and slap a 375 barrel in 375 Chat-Taylor on it.
If you can find a Ruger #1 take-off bbl in 375H&H, you can have the threads cut off and rethreaded and chambered to fit you Mark-X. I had the same thing done to a military 98 action a few years back. The Ruger bbl comes with nice sights and the take-offs are usually found at a good price.
